Tube expander and cutter.



No. 778,727. PATENTED DEC. 27, 1904. H. F. WEINLAND.

TUBE EXPANDER AND CUTTER.

APPLICATION FILED AUG 19 1903 3 SHEETS-SHEET 1 4W3 xii m PATENTED DEC.27, 1904.

H. F. WEINLAND.

TUBE BXPANDER AND CUTTER.

APPLICATION FILED AUG. 19, 1903.

3 SHEETS-SHEET 2.

PATENTED DEC. 27, 1904.

H. F. WEINLAND.

TUBE EXPANDER AND CUTTER.

APPLICATION FILED AUG.19, 1903.

3 SHEETS-SHEET 3.

mm m 6 1 3 w 0 a 0 1 W UNITED STATES Patented December 27, 1904.

PATENT OEEIcE.

HENRY F. IVEI-NLAND, OF SPRINGFIELD, OHIO, ASSIGNOR TO THE LAGONDAMANUFACTURING COMPANY, OF SPRINGFIELD, OHIO,

A CORPORATION OF OHIO.

TUBE EXPANDER AND CUTTER.

SPECIFICATION forming part of Letters Patent No. 778,727, dated December27, 1904.

Application filed August 19, 1903. Serial No. 169,994..

To (tZZ 1071/0111, it may concern:

Be it known that I, HENRY F. IVEINLAND, a citizen of the UnitedStates,residing at Springfield, in the county of Clark and State ofOhio, have invented certain new and useful Improvements in TubeExpanders and Cutters, of which the following is a specification,reference being had therein to the accompanying drawings.

This invention relates to improvements in combined tube expanders andcutters. and has for its object to provide a tool of this characterwhich is readily convertible from an expander to a cutter or thereverse, which is simple and strong in construction, may be used as atube-expander without requiring excessive power to operate it, and whichmay be adjusted to operate upon any portion of a tube of any length.

To these and other ends my invention consists in certain novel features,which I will now proceed to describe and will then particularly pointout in the claims.

In the accompanying drawings, Figure 1-is a central longitudinalsectional view, partly in elevation, of a structure embodyingmyinvention in one form, the same being arranged for use as an expander.Fig. 2is a sectional view of the same, taken on the line 0 w of Fig. 1and looking in the direction of the arrows. Fig. 3 is a transversesectional view through one of the expanding-rollers and its housing,taken on the line 3 y of Fig. 4 and looking in the direction of thearrows. Fig. A is a longitudinal section view of the same, taken on theline .2 of Fig. 3 and looking in the direction of the arrows. Fig. 5 isan elevation, partly in section, showing the tool arranged as a cutter.Fig. 6 is a sectional view taken on the line a a of Fig.5 and lookinginthe direction of the arrows. Fig. 7 is a transverse sectional view ofone of the cutters and its housing, taken on the line 0 o'of Fig. 8 andlooking in the direction of the arrows. Fig. 8 is a longitudinalsectional view of the same, taken on the line w w of Fig. 7 and lookingin the direction of the arrows; and Fig. 9 is a view,

partly in section and partly in elevation, illustrating the extensiblefeature of the device.

In the said drawings, 1 indicates a shell or casing, preferably circularin cross-section, and adapted to enter the tube to be operated on. bothends, being preferably of larger diame ter at its forward end, by whichis meant that end which carries the working tools, either cutters orrollers. This enlarged portion is slotted, as indicated at 2, the slotsbeing preferably three in number. At its other end the casing 1 isinternally threaded, as indicated at 3, said threaded portion extendingfrom the end of the casing inward to a stopshoulder 4 and the casingbeing preferably slightly enlarged at this end also to accommodate theenlargement of the bore or opening of the casing at the threaded portionthereof without diminishing the thickness of the casing. The bodyportion of the casing is also provided between its ends with alongitudinal slot 5 for the purpose hereinafter set forth. IVithin thethreaded seat thus formed at the rear end of the casing 5 there fits acollar or sleeve 6, having a reduced portion 7, threaded to fit thethread 3 of the easing, and an enlarged body portion 8, lying beyond theend of the casing 5, against which it abuts. This body portion isprovided With a circumferential groove 9, which forms onehalf of theraceway of a ball-bearing.

10 indicates a hand-wheel or hand-nut having a flange 11, which fitsoutside the body 8 of the sleeve 6 and has a circumferential groove 12on its interior, which lies opposite the groove 9 and completes theraceway above referred to. A plurality of bearing-balls 13, located inthis raceway,permit the hand-nut 10 -to turn freely on the sleeve 6, atthe same time preventing relative motion of the two parts longitudinallyof the device.

14 indicates a threaded collar or nut proper forming a part of thehand-Wheel or hand-nut 10, and in this nut fits a screw 15, whichconstitutes both a feed-screw for feeding out the working tools and ashaft for rotating the en- This shell or casing is hollow and open attire implement. To this latter end the rear i then rotated by means ofthe shaft 15. and end of the screw-shaft 15 is provided with an i thefriction of the rotating mandrel against apertured head 1.6to receive alever or handle, by means of which it may be turned.

The front end of the screw-shaft 15 is provided with a threadedextension 17 of less diameter than the body of the shaft, and thisextension fits in a eorrespondingly-threaded socket 18 in the rear endof a tapering mandrel 19, lying within the casing 1. It will be seenthat the construction is such that if the screw-shaft 15 is turned whilethe hand-nut 10 is held stationary or said hand-nut is turned while thescrew-shaft is held stationary the mandrel 19 will be movedlongitudinally with respect to the casing, thus permitting the saidmandrel to be moved forward for thrusting out the working tools orbackward to permit their being retracted.

In Figs. 1 to 1, inclusive, 1 have shown the implement as arranged forwork as a tubeexpander. The working tools or instrumentalities for thispurpose consist of a plurality of rollers 20, corresponding in numberwith the slots 2, there being three such rollers shown in the presentinstance. These rollers are preferably made tapering in each direction,being of the greatest diameter at their middle portion and decreasing indiameter toward each end, as shown; but they may be of any suitableconfiguration. Each roller is mounted in a housing or block 21, having acentral opening 22 to receive the roller 20. The block is of lessthickness than the diameter of the roller, so that the roller projectsboth above and below the block, as shown, and the side walls of theopening 22 are curved on a radius corresponding with that of the maximumdiameter of the roller, the roller being thus free to turn in the block,while maintaining its position therein. In order to permit the introduction of the roller into the block or housing, this latter is dividedtransversely, preferably along one end of the opening 22, the two partsbeing separable and being held together by dowel-pins 23. In this waythe two parts of the housing may be separated to permit the insertion ofthe roller and may then be reunited to inclose the same. Each block fitsand slides radially within one of the slots 2, being provided, however,with lateral projections 21, which limit the outward motion of thehousing, and thus prevent its dropping out of the casing 1. The innerface 25 of each house is preferably inclined at an angle correspondingwith the inclination of the tapering mandrel 19, with which, however, itdoes not come into contact.

When the implement is used as a tube-expander, it is placed within thetube at the desired point, and the tapering mandrel 19 is then advancedso as to bear against the inner portions of the rollers 20 and forcethem out against the inner surface of the tube with the desiredpressure. The entire implement is the rollers will cause these latter toturn and roll around, at the same time pressing against the innersurfaee of the tube on which they travel. It will be noted that it isnot the lateral pressure of the bearing-blocks or housings against therollers which causes these latter to travel around, but the frictionalcontact of the rollers with the mandrel and tube. By reason of this factthe implement can be turned with less power and while exerting a greaterpressure against the tube than is the case where the rollers are mountedin bearings in the casing and the rotative force is applied to thecasing to carry the rollers around. in the present instance the casingis carried. around by the blocks, which are in turn carried around bythe rollers; but since neither the blocks nor the casing exerts anyfrictional pressure against either the mandrel or the tube the implementcan, as already stated, be readily turned. As the work of expandingproceeds the mandrel may be advanced from. time to time to force therollers out, and when the operation is completed the mandrel may beretracted to permit the withdrawal of the implement.

In Figs. 5 to 8, inclusive, I have shown the implement as arranged as atube-cutter, in which case the working tools are cuttingdisks 26,corresponding in number with the slots 2. In this case the rollers 20and their housings 21 are removed, the cutter-disks 26 being substitutedfor the rollers and being mounted in housings or blocks 27, which takethe place of the housings or blocks 21. Each housing 27 is adapted tolit one of the slots 2 and is provided with projections or shoulders 28,corresponding to the projections or shoulders 2st of the blocks 21 andserving the same purpose to wit, to limit the outward movement of theblocks. Each block is provided with a central opening 29 to receive thecutter 26 and with a pin 30, extending longitudinally through the blockand forming a hearing for the cutter. .In this case, however, the blocksbear upon the mandrel 19, their inner face being inclined at an anglecorresponding with the taper of the mandrel and being preferablygrooved, as shown at 31, to [it the curvature of said mandrel. It willof course be understood that the cutters are of such a diameter thatthey do not come into contact with the mandrel. Since thisis the ease,provision must be made for causing the casing 1 to rotate along with themandrel, and for this purpose I l propose to employ any. suitable devicewhereby the casing and mandrel may be connected or disconnected at will.TlHSPI'OVISlOU18101 the purpose of enabling the rotative force of themandrel to be imparted directly or positively to the case when theimplementis used as acutter and to be imparted indirectly to the casingthrough the rollers when the device is used as an expander. Theconstruction which I have shown for effecting this consists of alongitudinal slot 5 in the casing in conjunction with a screw 32,passing through said slot into a threaded aperture 33 in the mandrel,near the outer end thereof. 1V hen this screw is in position as shown inFig. 5, it will be seen that the casing will positively rotate alongwith the mandrel and will carry the cutters 26 around with it. At thesame time the slot will permit the longitudinal'movement of the mandrelfor feeding out the cutters or withdrawing them. V hen said screw 32 isremoved, as shown in Fig. 1, there is no positi ve connection betweenthe mandrel, and casing, and this latter receives its rotary movementindirectly through the rollers in the manner hereinbefore described.

The implement thus constructed may be readily used either as an expanderor a cutter and gives a maximum efliciency for the force required tooperate it in either case.

The construction is also devised for the pur i pose of operating at adistance from the end of the tube, and this is readily efiected, asshown in Fig. 9, by unscrewing the sleeve 6 from the threaded socket atthe rear end of the casing 1, at the same time unscrewing the mandrel 19from the threaded projection 17 of the shaft 15. An ordinary gas-pipe 36or other suitable connection may be then screwed into the socket 18 anda similar pipe 37, of larger diameter, into the threaded socket 3. Thesepipes will be of such a length as to bring the implement, or rather thatportion thereof carrying the working tools, into proper position withinthe tube to be operated on. The sleeve 6 is then connected to the outerend of the outer pipe by means of a suitable threaded pi pe-coupling 38of the ordinary construction, and the shaft 15 is similarly connected tothe end of the inner pipe by means of a similar coupling 39. In this waythe working tools and easing 1 may be located within the tubev at anydesired distance from the end thereof, while the screw-shaft 15 andhand-nut 10 are located outside of the tube, where they are readilyaccessible. It should be noted that this extension of the range ofutility of the implement is effected by the use of ordinary gaspi pesand couplings, which are always readily obtainable.

I do not wish to be understood as limiting myself to the precise detailsof construction hereinbefore described, and shown in the accompanyingdrawings, as the same may be obviously modified without departing fromthe principle of my invention.

The bearing-balls 13 may be introduced into the raceway in any suitablemanner -as, for instance, by means of an aperture 34L in the flange 11,said aperture opening into the groove 12 to permit the introduction ofthe balls and being closed by a screw-plug or suitable closure 35 afterthe balls have been so introduced.

Having thus fully described my invention, What I claim as new, anddesire to secure by Letters Patent. is

1. A combined tube expander and cutter, comprising a casing adapted toreceive interchangeable and radially-movable cutters and rollers, atapering mandrel located within said casing, means for moving saidmandrel longitudinally with respect to said casing, means for impartinga rotary motion to said mandrel, and means for positively connectingsaid mandrel and casing to drive the latter directly and positively fromthe former, and for disconnecting said mandrel and easing, at will,whereby the movement of rotation of said mandrel may be imparted to thecase directly through the positive connecting means when the device isused as a cutter, and indirectly through the working instrumentalitieswhen the device is used as an expander, substantially as described.

2. In a combined tube expander and cutter, the combination, with acasing carrying the working tools or instrumentalities, and a taperingmandrel for forcing outward said instrumentalities, said mandrel beingmovable longitudinally within the casing, and being provided with meansfor rotating it, of means for positively connecting said mandrel andcasing to drive the latter directly and positively from the former, andfor disconnecting said mandrel and casing, at will, whereby the rotarymotion of said mandrel may be transmitted directly through said positiveconnecting means to the casing when the device is used as a cutter, andindirectly through the working instrumentalities when the device is usedas an expander,substantially as described.

3. In a combined tube expander and cutter, the combination, with acasing carrying the working tools or instrumentalities, and a taperingmandrel movable longitudinally of the casing to force saidinstrumentalities outward, said mandrel being provided with means forrotating it, and means for feeding it longitudinally of the casing, of apart separably connecting said mandrel and casing, said part detachablyengaging one of said members and having a longitudinally-slidingengagement with the other member, substantially as described.

4. In a combined tube expander and cutter, the combination, with acasing carrying the working instrumentalities, and a tapering mandrelmovable longitudinally in said casing to force said instrumentalitiesoutward, said mandrel being provided with means for rotating it, andmeans for feeding said mandrel longitudinally of the casing, of a partseparably connecting the mandrel and casing, said part extending throughthe casing, which is provided with a longitudinal slot to receive thesame, and detachably engaging the manl ing the workinginstrumentalities, and a tadrel, substantially as described.

5. In a combined tube expander and cutter, the combination, with acasing carrying the working instrumentalities, said casing beinglongitudinally slotted, of a tapering mandrel movable longitudinally ofthe casing to force said instrumentalities outward, said mandrel beingprovided with a threaded shaft whereby it may be rotated, a hand-nutmounted to rotate on the casing and engaging said threaded shaft to feedthe mandrel longitudinally of the casing, and a part separablyconnecting the mandrel and easing, said part extending through andtraveling in the longitudinal slot of the casing and detachably engagingthe mandrel, substantially as described.

6. In an implement of the character described, the combination, with acasing carrying the working instrumentalities, of a sleeve removablymounted in the outer end of said casing, said sleeve being provided withan external circumferential groove, a hand-nut having a flange inclosingsaid sleeve and having an internal circumferential groove registeringwith the groove of the sleeve, bearing-balls located in the racewayformed by said grooves and serving to prevent separation of the sleeveand nut in an axial direction, a screw-shaft threaded through thehand-nut, and a tapering mandrel mounted on the end of the screwshaftwithin the casing.

7. In an implement of the character described, the combination, with acasing carrypering mandrel longitudinally movable therein, of a sleevehaving a hand-nut rotatably mounted thereon, and a screw-shaft threadedthrough said nut, said sleeve being separably connected with the casing,and said screwshaft being separably connected with the mandrel, wherebythe working parts within the tube and the operating parts without thetube may be separated for the interposition between them ofextension-pieces, substantially as described.

8. In an implement of the character described, the combination, with acasing carrying the working instrumentalities and provided with athreaded socket at its outer end, and a tapering mandrel longitudinallymovable within the casing and provided with a threaded socket at itsouter end, of a sleeve threaded to fit the socket of the casing andhaving a hand-nut mounted to rotate thereon, and a screw-shaft threadedthrough the handnut and having a threaded extension to lit the socket ofthe mandrel, whereby said sleeve and said screw-shaft may be separatedfrom the casing and mandrel to permit the insertion between them ofextension-pieces, substantially as described.

In testimony whereof I affix my signature in presence of two witnesses.

HENRY F. W EINLAND.

Witnesses:

AL. H. KUNKLE, F. W. SOHAEFER.

